Edge-preserver for commercial or minute books.



No. 648,306. Patented Apr. 24, I900.

F. SCHUBERT-SALATHE. EDGE PBESERVER FOR COMMERCIAL 08 MINUTE BOOKS.

(Application filed Oct. 16, 1399. (No Model.)

IN vu/m e I HTOIVNE vs NITED STATES PATENT OFFICE.

FRITZSCHUBERT-SALATHE, or ZURICH, SWITZERLAND.

EDGE-PRESERVER FOR COMMERCIAL OR MINUTE BOOKS.

SPEGIFICATIONforming part of Letters Patent No. 648,306, dated April 24,1966. Application filed October 16, 1899. serial No. 733,821. (Nomodel.)

To all whom it may concern:

Be it known thatI, FRITZ SCHUBERT-SA- LATHE, residing at Zurich, in thecanton of Zurich and Republic of Switzerland, have invented certain newand useful Improvements in Edge-Preservers for Commercial or MinuteBooks; and I do declare the following to be a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings, which form a part of this specification.

The object of my invention is to prevent the rapid deteriorationof theedges, the small faces, and the surfaces of the cover and the head-bandof books which are stored up in safes, chests, and frames and which arein constant use, as is the case with commercial or minute books.

The cover and head-band of a book even when reinforced with leather donot resist the constant in-and-out sliding every day during years, andnot only the edges of the cover, but also the pasteboards inside thecovers, become injured. To obviate this inconvenience, the lower edgeshave been provided with comparatively-broad plates of sheet metal bentover the surfaces of the covers; but the actual way of bookbindingdislodged these old contrivances for commercialbooks, as these platesare easily knocked up and bent in some places, when they badly injurethetables and desks on which they are used. In order to satisfy thedesired requisite of durability, the application of solid bars of brassor other suitable material to protect the edges, the small faces, thesurfaces, and the head-bands of commercial books has been adopted, bywhich those portions of the books which are mostly exposed to be hurtand injured are absolutely protected from being damaged. The costly wayof bordering the edges of books with hogskin, neats leather, parchment,or even sheet metal will be made superfluous by the adoption of thisedge-preserver.

In order that my invention may be fully understood, Ihave illustrated inthe accompanying drawings and will proceed to describe the best forms ofthe edge-preserver so far devised by me, with the knowledge that theremay be various modifications made in the same without, however, making asubstantial departure from the spirit of the invention.

In the accompanying drawings, Figure 1 represents a side view of acommercial book provided with edge and head-band preservers. Fig. 2 is aperspective view ofa part of .a book-cover provided with an opening toreceive the fastening part of the edge-preserver. Figs. 3, 4, and 5 area side view, a plan, and a cross-section of the edge-preserver itself before being adjusted. Fig. 6 represents a side and an end view of atoothed fastening part, (projecting plate;) and Figs. 7, 8, and 9 are aside View, a plan, and a cross-section, of an edge-preserver serving asa head-band preserver.

ctis the cover of a book, the surface of which is covered at the face bythe leg I) and the edge by the leg 0 of. the preserving-bar d, the edgeof the cover thus lying in the reentering angle of the bar. This bar 01has projections (2, having dovetailed bases f, which are calked andsoldered into slots of the bar d. The projections e enter into suitableslots made in the small face of the cover and are fastened to the sameby means of rivets e. Toothed projections g, Fig. 6, may also be used.The fastening of these projections may be operated as follows: Afterhaving coated the projections with glue or other suitable adhesivematerial they are introduced into the slots of the small face of thecover, whereupon strong blows are applied to the portions of thecover-inclosing projections. The teeth of the projections g hereby embedthemselves into the body of the cover and produce a solid fastening ofthe bar to the cover. In this case no rivets will be necessary.

In order to protect the head-bands h of books which have a stiffback-that is to say, a back which when opening the book always has the.same curvethe edge-preserver (1 (shown in Figs. 7, 8, and 9) is used.According to the curved back of the book the edgepreserver issemicircular-shaped. The projections e are the same as described withref erence to Figs. 2, 3, 4, and 5.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. An ed ge-preserver for books, consisting of a solid bar 01, ofcircular cross-section with rectangular recess, one wall of the recessfitcomposed of solid bars (1 having'a. portion b in combinationWithprojectionse having a projections 9 having dovetailed bases se- 16dovetailed base f embedded into one of the cured to the bar 1. v

said faces of the bar. i In witness whereof I have hereunto set my 2.Edge-preservers for the cover and the hand in presence of two Witnesses.

head-band of commercial and mlnute books FRITZ soHUBERTTsALATHfi.

' overlapping the face of the cover or the head- Witnesses bandof thebook, a portion cjlaidover the JOHN G. PLATNER, edge of the cover or thehead-band andtoothed GEORGE GIFFORD.

